DBeaver - DBeaver - Universal Database Manager and SQL Client.
4D - 4D is a relational database management system and IDE.
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
Informix - IBM Informix is a secure embeddable database optimized for OLTP and IoT data. Informix can seamlessly integrate SQL, NoSQL/JSON, and time series and spatial data.
Sequel Pro - MySQL database management for Mac OS X
H2 Database - H2 is free SQL database written in Java